This is an expression that means to be in charge, to give the orders, to tell other people what they must do. There are other expressions that are similar, such as to "call the tune." (The history of "to call the shots" may go back to a sport like skeet-shooting or perhaps to the military. The history of "to call the tune" may refer to the leader of the musicians, the person who decides what song the band will play.)
In billiards or pool, to call your shot means to declare ahead of time which pocket in the table you are going to aim your ball. This has come to mean figuratively that you are in charge of the situation.
It's not an idiom. It means exactly what it says. "By all means" or "by any method necessary."
It's not an idiom. It means just what it says - every generation in the future.
When all eyes are something, then everyone is looking at it.
It means that the person is giving you their full attention.
It depends on how you use it. If you mean literal colors, then it's not an idiom. If you say something like "It's all there in black and white," then it's an idiom meaning that something is printed.
Shoot everyone in the head.
The idiom is " all the bells and whistles ". It means, all the extras possible. For example, the new car came with all the bells and whistles. It was loaded with every option possible.
All to the hour. It's an idiom.. meaning: "See you soon."
Cranny's crony is a idiom or way of saying "friend"
It's not really an idiom. It means just what it sounds like -- whatever happened just proves what you were saying all along.
It means you don't understand something at all.
The idiom give their all means to do everything you can to accomplish a task.